[shī wàng]
（感到没有希望） lose hope; beyond (all) hope
The doctors could hold out no hope of his recovery.
医生们对他的痊愈失望了。
disappointing
令人失望
disappointment at sth.
对某事失望
terrible disappointment
极度的失望
She couldn't hide her disappointment.
她无法掩饰自己失望的情绪。
Our disappointment was complete.
我们失望极了。